Cov txheej txheem:
Video: Qhib-qhov chaw 3/4/5S Lithium BMS: 4 Cov Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27
Hauv Qhov Qhia Qhia no tsim los ntawm BMS345 yuav piav qhia. Kev tsim qauv tau qhib tag nrho, cov ntaub ntawv tsim muaj nyob hauv GitHub txuas hauv qib kawg. Kuj tseem muaj qhov txwv tsis pub muaj rau ntawm Tindie.
BMS345 yog BatteryManagementSystem uas txhawb nqa 3, 4 thiab 5 cells lithium-ion packs. Yog tias koj tsim/yuav pob nrog cov cell uas tsis muaj kev tiv thaiv, PCB no tuaj yeem muab ntxiv los tswj kev tiv thaiv thiab them nyiaj. Qhov no suav nrog:
- Kev tiv thaiv hauv qab/overvoltage
- Kev tiv thaiv overcurrent (/shortcircuit)
- Ntsuas ntawm tes
- MPPT them nyiaj
Cov ntaub ntawv yuav muab faib ua:
- Kev tiv thaiv
- Them
- Kev teeb tsa
- Cov khoom kawg
Txaus siab rau:)
Kauj Ruam 1: Kev Tiv Thaiv
Kev tiv thaiv yog ua los ntawm TI BQ77915.
- Cov tswv yim tawm tswv yim yog 1K, uas teev qhov sib npaug tam sim no rau 4mA/cell
- Lub taub hau yog feem ntau siv JST-XH 4/5/6P nyob ntawm qhov teeb tsa
- NTC tuaj yeem txuas nrog header J5, tab sis cov yam ntxwv no yog neeg xiam oob khab los ntawm R26
- Qhov tsis zoo txuas tau hloov pauv los ntawm dual N-channel mosfet (NVMFD5C466NL)
- Qhov kev nkag siab tam sim no yog 2x8m (4m sib npaug) ohm, teeb tsa kev tiv thaiv tam sim no rau 15A
Kauj ruam 2: Them
Kev them nyiaj yog ua los ntawm TI BQ24650
- D1 qhia qhov xwm txheej them nyiaj, sab nrauv LED tuaj yeem txuas nrog ntawm J4
- R30 teeb tus nqi tam sim no rau 1A
- Kev ntsuas qhov ntsuas kub yog xiam oob qhab los ntawm R13/R14/C14
- MPPT qhov hluav taws xob tau teeb tsa rau 17.2V los ntawm R22 thiab R28
- Cov mosfets yog tib hom ob hom pob raws li tau siv hauv kev tiv thaiv Circuit Court
- Lub roj teeb them lub neej ntawd yog 4.2V, uas tsis tshua muaj kev tiv thaiv kev tiv thaiv overvoltage ntawm BQ77915. Nws raug pom zoo kom suav nrog R36 nrog 22M kom txo tus nqi hluav taws xob mus rau 4.05V/cell. Qhov no zam kev dag dhau qhov hluav taws xob ua rau.
Kev them nqi tuaj yeem ua tiav los ntawm 24V 1A cov khoom siv lossis txawm tias lub hnub ci vaj huam sib luag (tsuas yog rau 3/4S teeb tsa).
Kauj ruam 3: Kev teeb tsa
Lub taub hau no tuaj yeem yog nrog cov dhia kom teeb tsa lub teeb tsa.
Kauj Ruam 4: Xaus Khoom
Koj tuaj yeem ntxiv PCB rau hauv Vruzend system raws li pom hauv daim duab, tab sis nws kuj tseem haum rau RC lipo thiab pob ntim tsis tu ncua.
Txuas mus rau Tindie:
www.tindie.com/products/zoudio/bms345-prot…
Txuas rau github
github.com/ZOUDIO/BMS345
Ua tsaug rau kev nyeem ntawv.
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